/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 17:58:53,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 17:58:53,085 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 17:58:53,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 17:58:53,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 17:58:53,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 17:58:53,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 17:58:53,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 17:58:53,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 17:58:53,109 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 17:58:53,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 17:58:53,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 17:58:53,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 17:58:53,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 17:58:53,110 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 17:58:53,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 17:58:53,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 17:58:53,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 17:58:53,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 17:58:53,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 17:58:53,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 17:58:53,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 17:58:53,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 17:58:53,112 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 17:58:53,112 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 17:58:53,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 17:58:53,113 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 17:58:53,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 17:58:53,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 17:58:53,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 17:58:53,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 17:58:53,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 17:58:53,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 17:58:53,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 17:58:53,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:58:53,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 17:58:53,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 17:58:53,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 17:58:53,115 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 17:58:53,115 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 17:58:53,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 17:58:53,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 17:58:53,115 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 17:58:53,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 17:58:53,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 17:58:53,116 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 17:58:53,116 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 17:58:53,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 17:58:53,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 17:58:53,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 17:58:53,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 17:58:53,321 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 17:58:53,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_1.c [2023-12-21 17:58:54,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 17:58:54,438 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 17:58:54,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_1.c [2023-12-21 17:58:54,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cd81b46/0a58fd3a9b4a4e0eb4980231931098a4/FLAG9a6bd3f7a [2023-12-21 17:58:54,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cd81b46/0a58fd3a9b4a4e0eb4980231931098a4 [2023-12-21 17:58:54,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 17:58:54,454 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 17:58:54,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 17:58:54,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 17:58:54,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 17:58:54,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ec0154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54, skipping insertion in model container [2023-12-21 17:58:54,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 17:58:54,568 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_1.c[323,336] [2023-12-21 17:58:54,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:58:54,586 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 17:58:54,593 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_1.c[323,336] [2023-12-21 17:58:54,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:58:54,605 INFO L206 MainTranslator]: Completed translation [2023-12-21 17:58:54,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54 WrapperNode [2023-12-21 17:58:54,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 17:58:54,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 17:58:54,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 17:58:54,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 17:58:54,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,628 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2023-12-21 17:58:54,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 17:58:54,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 17:58:54,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 17:58:54,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 17:58:54,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,643 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-21 17:58:54,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 17:58:54,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 17:58:54,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 17:58:54,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 17:58:54,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (1/1) ... [2023-12-21 17:58:54,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:58:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 17:58:54,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 17:58:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 17:58:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 17:58:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 17:58:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 17:58:54,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 17:58:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 17:58:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 17:58:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 17:58:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 17:58:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 17:58:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 17:58:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 17:58:54,750 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 17:58:54,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 17:58:54,922 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 17:58:54,943 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 17:58:54,943 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 17:58:54,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:58:54 BoogieIcfgContainer [2023-12-21 17:58:54,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 17:58:54,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 17:58:54,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 17:58:54,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 17:58:54,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:58:54" (1/3) ... [2023-12-21 17:58:54,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9f102d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:58:54, skipping insertion in model container [2023-12-21 17:58:54,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:58:54" (2/3) ... [2023-12-21 17:58:54,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9f102d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:58:54, skipping insertion in model container [2023-12-21 17:58:54,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:58:54" (3/3) ... [2023-12-21 17:58:54,948 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.c [2023-12-21 17:58:54,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 17:58:54,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 17:58:54,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 17:58:55,001 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f39061a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 17:58:55,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 17:58:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 17:58:55,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:55,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:55,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:55,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash 802981352, now seen corresponding path program 1 times [2023-12-21 17:58:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:55,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574036063] [2023-12-21 17:58:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:58:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:55,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:55,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 17:58:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:58:55,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 17:58:55,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:58:55,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:58:55,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574036063] [2023-12-21 17:58:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574036063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:58:55,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:58:55,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:58:55,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102971571] [2023-12-21 17:58:55,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:58:55,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 17:58:55,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 17:58:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:58:55,127 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:55,160 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2023-12-21 17:58:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 17:58:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 17:58:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:55,166 INFO L225 Difference]: With dead ends: 24 [2023-12-21 17:58:55,166 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 17:58:55,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:58:55,170 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:55,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:58:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 17:58:55,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 17:58:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2023-12-21 17:58:55,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2023-12-21 17:58:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:55,190 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-12-21 17:58:55,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-12-21 17:58:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 17:58:55,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:55,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:55,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:55,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:55,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:55,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -369624547, now seen corresponding path program 1 times [2023-12-21 17:58:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492839658] [2023-12-21 17:58:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:58:55,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:55,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:55,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:55,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 17:58:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:58:55,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 17:58:55,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:58:55,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:58:55,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:55,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492839658] [2023-12-21 17:58:55,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492839658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:58:55,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:58:55,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:58:55,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294575372] [2023-12-21 17:58:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:58:55,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 17:58:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 17:58:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 17:58:55,473 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:55,580 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2023-12-21 17:58:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 17:58:55,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 17:58:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:55,581 INFO L225 Difference]: With dead ends: 26 [2023-12-21 17:58:55,581 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 17:58:55,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 17:58:55,582 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:55,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:58:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 17:58:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-21 17:58:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-21 17:58:55,586 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2023-12-21 17:58:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:55,586 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-21 17:58:55,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-21 17:58:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 17:58:55,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:55,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:55,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:55,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:55,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1324979005, now seen corresponding path program 1 times [2023-12-21 17:58:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:55,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054048027] [2023-12-21 17:58:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:58:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:55,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:55,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 17:58:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:58:55,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 17:58:55,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:58:55,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:58:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:58:55,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054048027] [2023-12-21 17:58:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054048027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:58:55,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:58:55,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 17:58:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746679403] [2023-12-21 17:58:55,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:58:55,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 17:58:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:55,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 17:58:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 17:58:55,920 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:56,183 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-12-21 17:58:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:58:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 17:58:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:56,184 INFO L225 Difference]: With dead ends: 33 [2023-12-21 17:58:56,184 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 17:58:56,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:58:56,185 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:56,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:58:56,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 17:58:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 17:58:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-21 17:58:56,189 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2023-12-21 17:58:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:56,189 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-21 17:58:56,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-21 17:58:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 17:58:56,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:56,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:56,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:56,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:56,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash -531198499, now seen corresponding path program 1 times [2023-12-21 17:58:56,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:56,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550241891] [2023-12-21 17:58:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:58:56,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:56,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:56,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:56,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 17:58:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:58:56,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 17:58:56,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:58:56,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:58:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:58:57,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550241891] [2023-12-21 17:58:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550241891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:58:57,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:58:57,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 17:58:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777028286] [2023-12-21 17:58:57,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:58:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:58:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:58:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:58:57,156 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:57,939 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-12-21 17:58:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 17:58:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 17:58:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:57,943 INFO L225 Difference]: With dead ends: 45 [2023-12-21 17:58:57,943 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 17:58:57,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:58:57,944 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:57,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 17:58:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 17:58:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-12-21 17:58:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-21 17:58:57,950 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 20 [2023-12-21 17:58:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:57,951 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-21 17:58:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-21 17:58:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 17:58:57,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:57,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:57,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:58,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash 407025309, now seen corresponding path program 2 times [2023-12-21 17:58:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409365780] [2023-12-21 17:58:58,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:58:58,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:58,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:58,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:58,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 17:58:58,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 17:58:58,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:58:58,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 17:58:58,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 17:58:58,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:58:58,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:58,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409365780] [2023-12-21 17:58:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409365780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:58:58,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:58:58,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 17:58:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229346811] [2023-12-21 17:58:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:58:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 17:58:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 17:58:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 17:58:58,305 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:58,458 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2023-12-21 17:58:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:58:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 17:58:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:58,459 INFO L225 Difference]: With dead ends: 41 [2023-12-21 17:58:58,459 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 17:58:58,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:58:58,461 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:58,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:58:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 17:58:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-21 17:58:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-12-21 17:58:58,466 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2023-12-21 17:58:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:58,466 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-12-21 17:58:58,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-12-21 17:58:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 17:58:58,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:58,467 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:58,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:58,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:58,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2102952292, now seen corresponding path program 1 times [2023-12-21 17:58:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033445315] [2023-12-21 17:58:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:58:58,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:58,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:58,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 17:58:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:58:58,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 17:58:58,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 17:58:58,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:58:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 17:58:58,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:58,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033445315] [2023-12-21 17:58:58,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033445315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:58:58,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:58:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 17:58:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48445798] [2023-12-21 17:58:58,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:58:58,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 17:58:58,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 17:58:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 17:58:58,951 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:59,612 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2023-12-21 17:58:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 17:58:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 17:58:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:59,614 INFO L225 Difference]: With dead ends: 68 [2023-12-21 17:58:59,614 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 17:58:59,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 17:58:59,615 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:59,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 17:58:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 17:58:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 17:58:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-12-21 17:58:59,621 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2023-12-21 17:58:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:59,621 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-12-21 17:58:59,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-12-21 17:58:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 17:58:59,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:59,622 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:59,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:59,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:59,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash 514299228, now seen corresponding path program 1 times [2023-12-21 17:58:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:59,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185996034] [2023-12-21 17:58:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:58:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:59,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:59,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 17:58:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:58:59,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 17:58:59,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:59:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 73 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 17:59:00,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:59:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 73 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 17:59:02,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:59:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185996034] [2023-12-21 17:59:02,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185996034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:59:02,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:59:02,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-21 17:59:02,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687272236] [2023-12-21 17:59:02,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:59:02,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 17:59:02,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:59:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 17:59:02,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-21 17:59:02,232 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:59:05,159 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2023-12-21 17:59:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 17:59:05,161 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 17:59:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:59:05,161 INFO L225 Difference]: With dead ends: 97 [2023-12-21 17:59:05,161 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 17:59:05,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:59:05,162 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:59:05,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 17:59:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 17:59:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2023-12-21 17:59:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 62 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-12-21 17:59:05,170 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 43 [2023-12-21 17:59:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:59:05,170 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-12-21 17:59:05,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-12-21 17:59:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 17:59:05,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:59:05,171 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:59:05,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 17:59:05,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:05,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:59:05,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:59:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash -413285412, now seen corresponding path program 2 times [2023-12-21 17:59:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:59:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914157995] [2023-12-21 17:59:05,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:59:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:59:05,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:59:05,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 17:59:05,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:59:05,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:59:05,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 17:59:05,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:59:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 17:59:05,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:59:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 17:59:06,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:59:06,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914157995] [2023-12-21 17:59:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914157995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:59:06,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:59:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 17:59:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515408897] [2023-12-21 17:59:06,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:59:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 17:59:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:59:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 17:59:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 17:59:06,227 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:59:08,815 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2023-12-21 17:59:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 17:59:08,816 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 17:59:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:59:08,816 INFO L225 Difference]: With dead ends: 104 [2023-12-21 17:59:08,816 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 17:59:08,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 17:59:08,817 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:59:08,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 63 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 17:59:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 17:59:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-21 17:59:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2023-12-21 17:59:08,824 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 43 [2023-12-21 17:59:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:59:08,824 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2023-12-21 17:59:08,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2023-12-21 17:59:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 17:59:08,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:59:08,826 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 14, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:59:08,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 17:59:09,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:09,031 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:59:09,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:59:09,031 INFO L85 PathProgramCache]: Analyzing trace with hash 202850652, now seen corresponding path program 2 times [2023-12-21 17:59:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:59:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656338847] [2023-12-21 17:59:09,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:59:09,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:09,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:59:09,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:59:09,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 17:59:09,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:59:09,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:59:09,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 17:59:09,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:59:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 301 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 17:59:09,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:59:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 301 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 17:59:17,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:59:17,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656338847] [2023-12-21 17:59:17,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656338847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:59:17,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:59:17,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-21 17:59:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699840487] [2023-12-21 17:59:17,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:59:17,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 17:59:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:59:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 17:59:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2023-12-21 17:59:17,543 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 32 states, 32 states have (on average 3.1875) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:59:38,748 INFO L93 Difference]: Finished difference Result 161 states and 201 transitions. [2023-12-21 17:59:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 17:59:38,753 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 17:59:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:59:38,754 INFO L225 Difference]: With dead ends: 161 [2023-12-21 17:59:38,754 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 17:59:38,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 17:59:38,755 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:59:38,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 84 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 17:59:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 17:59:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-12-21 17:59:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 110 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2023-12-21 17:59:38,763 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 79 [2023-12-21 17:59:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:59:38,764 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2023-12-21 17:59:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2023-12-21 17:59:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 17:59:38,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:59:38,765 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:59:38,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 17:59:38,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:38,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:59:38,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:59:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash 154263132, now seen corresponding path program 3 times [2023-12-21 17:59:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:59:38,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122668860] [2023-12-21 17:59:38,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:59:38,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:59:38,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:59:38,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 17:59:39,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 17:59:39,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:59:39,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 17:59:39,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:59:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-21 17:59:39,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:59:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-21 17:59:41,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:59:41,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122668860] [2023-12-21 17:59:41,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122668860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:59:41,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:59:41,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 17:59:41,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732244947] [2023-12-21 17:59:41,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:59:41,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 17:59:41,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:59:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 17:59:41,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:59:41,855 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:59:43,119 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2023-12-21 17:59:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 17:59:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 17:59:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:59:43,122 INFO L225 Difference]: With dead ends: 133 [2023-12-21 17:59:43,123 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 17:59:43,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2023-12-21 17:59:43,123 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:59:43,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 41 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 17:59:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 17:59:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-12-21 17:59:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1384615384615384) internal successors, (148), 130 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2023-12-21 17:59:43,131 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 79 [2023-12-21 17:59:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:59:43,136 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2023-12-21 17:59:43,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:59:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2023-12-21 17:59:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 17:59:43,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:59:43,138 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 17:59:43,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 17:59:43,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:43,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:59:43,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:59:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash -28958820, now seen corresponding path program 4 times [2023-12-21 17:59:43,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:59:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614738763] [2023-12-21 17:59:43,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:59:43,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:59:43,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:59:43,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:59:43,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 17:59:43,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:59:43,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:59:43,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 17:59:43,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:59:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 17:59:43,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:59:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 17:59:45,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:59:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614738763] [2023-12-21 17:59:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614738763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:59:45,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:59:45,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 17:59:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296259774] [2023-12-21 17:59:45,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:59:45,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 17:59:45,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:59:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 17:59:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 17:59:45,999 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:00:00,629 INFO L93 Difference]: Finished difference Result 216 states and 271 transitions. [2023-12-21 18:00:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 18:00:00,630 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 18:00:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:00:00,630 INFO L225 Difference]: With dead ends: 216 [2023-12-21 18:00:00,631 INFO L226 Difference]: Without dead ends: 178 [2023-12-21 18:00:00,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 18:00:00,632 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 190 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:00:00,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 118 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 18:00:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-21 18:00:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-12-21 18:00:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.1412429378531073) internal successors, (202), 177 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 202 transitions. [2023-12-21 18:00:00,642 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 202 transitions. Word has length 99 [2023-12-21 18:00:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:00:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 202 transitions. [2023-12-21 18:00:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 202 transitions. [2023-12-21 18:00:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 18:00:00,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:00:00,645 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 30, 16, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 18:00:00,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-21 18:00:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:00,849 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:00:00,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:00:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash -807216484, now seen corresponding path program 3 times [2023-12-21 18:00:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:00:00,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743136087] [2023-12-21 18:00:00,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:00:00,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:00,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:00:00,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:00:00,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 18:00:01,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 18:00:01,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:00:01,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 18:00:01,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:00:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-12-21 18:00:01,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:00:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-12-21 18:00:12,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:00:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743136087] [2023-12-21 18:00:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743136087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:00:12,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:00:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-21 18:00:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463951163] [2023-12-21 18:00:12,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:00:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 18:00:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:00:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 18:00:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-12-21 18:00:12,853 INFO L87 Difference]: Start difference. First operand 178 states and 202 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:00:24,595 INFO L93 Difference]: Finished difference Result 220 states and 259 transitions. [2023-12-21 18:00:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 18:00:24,598 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-12-21 18:00:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:00:24,599 INFO L225 Difference]: With dead ends: 220 [2023-12-21 18:00:24,599 INFO L226 Difference]: Without dead ends: 218 [2023-12-21 18:00:24,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=510, Invalid=1050, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 18:00:24,601 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:00:24,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 110 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 18:00:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-21 18:00:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-12-21 18:00:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.152073732718894) internal successors, (250), 217 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 250 transitions. [2023-12-21 18:00:24,615 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 250 transitions. Word has length 171 [2023-12-21 18:00:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:00:24,615 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 250 transitions. [2023-12-21 18:00:24,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 250 transitions. [2023-12-21 18:00:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 18:00:24,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:00:24,617 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 30, 16, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 18:00:24,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 18:00:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:24,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:00:24,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:00:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash -956498660, now seen corresponding path program 4 times [2023-12-21 18:00:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:00:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015417830] [2023-12-21 18:00:24,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:00:24,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:24,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:00:24,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:00:24,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 18:00:25,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:00:25,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:00:25,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 18:00:25,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:00:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 1441 proven. 1365 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-12-21 18:00:26,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:01:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 1441 proven. 1365 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-12-21 18:01:02,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:01:02,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015417830] [2023-12-21 18:01:02,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015417830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:01:02,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:01:02,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2023-12-21 18:01:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632485997] [2023-12-21 18:01:02,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:01:02,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 18:01:02,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:01:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 18:01:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 18:01:02,836 INFO L87 Difference]: Start difference. First operand 218 states and 250 transitions. Second operand has 64 states, 64 states have (on average 3.09375) internal successors, (198), 63 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:04:19,907 INFO L93 Difference]: Finished difference Result 409 states and 505 transitions. [2023-12-21 18:04:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 18:04:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.09375) internal successors, (198), 63 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-21 18:04:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:04:19,911 INFO L225 Difference]: With dead ends: 409 [2023-12-21 18:04:19,912 INFO L226 Difference]: Without dead ends: 284 [2023-12-21 18:04:19,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 225.9s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 18:04:19,914 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 169 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:04:19,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 179 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-21 18:04:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-21 18:04:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2023-12-21 18:04:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.1278195488721805) internal successors, (300), 266 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2023-12-21 18:04:19,935 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 211 [2023-12-21 18:04:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:04:19,935 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2023-12-21 18:04:19,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.09375) internal successors, (198), 63 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2023-12-21 18:04:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 18:04:19,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:04:19,937 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 18:04:19,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 18:04:20,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:20,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:04:20,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:04:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1338521372, now seen corresponding path program 5 times [2023-12-21 18:04:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:04:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810581030] [2023-12-21 18:04:20,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:04:20,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:04:20,153 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:04:20,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 18:04:21,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-12-21 18:04:21,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:04:21,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 18:04:21,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:04:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 18:04:23,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:04:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 18:04:31,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:04:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810581030] [2023-12-21 18:04:31,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810581030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:04:31,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:04:31,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 18:04:31,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111372472] [2023-12-21 18:04:31,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:04:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 18:04:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:04:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 18:04:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 18:04:31,835 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand has 96 states, 96 states have (on average 3.0) internal successors, (288), 95 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:06:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:06:35,396 INFO L93 Difference]: Finished difference Result 440 states and 551 transitions. [2023-12-21 18:06:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 18:06:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.0) internal successors, (288), 95 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-21 18:06:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:06:35,398 INFO L225 Difference]: With dead ends: 440 [2023-12-21 18:06:35,398 INFO L226 Difference]: Without dead ends: 362 [2023-12-21 18:06:35,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 122.8s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 18:06:35,403 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 632 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 7102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 7105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:06:35,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 243 Invalid, 7105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7102 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-21 18:06:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-21 18:06:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-12-21 18:06:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.1357340720221607) internal successors, (410), 361 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:06:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 410 transitions. [2023-12-21 18:06:35,446 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 410 transitions. Word has length 211 [2023-12-21 18:06:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:06:35,446 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 410 transitions. [2023-12-21 18:06:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.0) internal successors, (288), 95 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:06:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 410 transitions. [2023-12-21 18:06:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-21 18:06:35,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:06:35,451 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 62, 32, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 18:06:35,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 18:06:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:06:35,664 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:06:35,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:06:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1881713948, now seen corresponding path program 5 times [2023-12-21 18:06:35,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:06:35,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603309551] [2023-12-21 18:06:35,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:06:35,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:06:35,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:06:35,667 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:06:35,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 18:06:50,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2023-12-21 18:06:50,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:06:51,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 18:06:51,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:06:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13649 backedges. 5953 proven. 5797 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2023-12-21 18:06:53,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:09:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13649 backedges. 5953 proven. 5797 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2023-12-21 18:09:23,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:09:23,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603309551] [2023-12-21 18:09:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603309551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:09:23,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:09:23,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 65] total 128 [2023-12-21 18:09:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815831537] [2023-12-21 18:09:23,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:09:23,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-21 18:09:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:09:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-21 18:09:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4288, Invalid=12224, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 18:09:23,093 INFO L87 Difference]: Start difference. First operand 362 states and 410 transitions. Second operand has 129 states, 129 states have (on average 3.0232558139534884) internal successors, (390), 128 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:10:07,718 WARN L293 SmtUtils]: Spent 33.62s on a formula simplification that was a NOOP. DAG size: 440 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:11:22,714 WARN L293 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 436 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:12:13,698 WARN L293 SmtUtils]: Spent 42.48s on a formula simplification that was a NOOP. DAG size: 433 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:13:15,272 WARN L293 SmtUtils]: Spent 53.69s on a formula simplification that was a NOOP. DAG size: 429 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 18:13:34,758 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:13:34,758 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:13:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 18:13:35,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 367.2s TimeCoverageRelationStatistics Valid=4804, Invalid=12752, Unknown=0, NotChecked=0, Total=17556 [2023-12-21 18:13:35,099 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11977 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:13:35,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 11979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11977 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 18:13:35,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:13:35,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-21 18:13:35,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:13:35,302 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (362states) and FLOYD_HOARE automaton (currently 69 states, 129 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-61-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-60-2-1 context. [2023-12-21 18:13:35,306 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 2, 1, 1, 1] [2023-12-21 18:13:35,308 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:13:35,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:13:35 BoogieIcfgContainer [2023-12-21 18:13:35,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:13:35,310 INFO L158 Benchmark]: Toolchain (without parser) took 880856.34ms. Allocated memory was 199.2MB in the beginning and 310.4MB in the end (delta: 111.1MB). Free memory was 147.6MB in the beginning and 251.7MB in the end (delta: -104.1MB). Peak memory consumption was 168.1MB. Max. memory is 8.0GB. [2023-12-21 18:13:35,310 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 199.2MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:13:35,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.38ms. Allocated memory is still 199.2MB. Free memory was 147.4MB in the beginning and 136.2MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:13:35,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.45ms. Allocated memory is still 199.2MB. Free memory was 136.2MB in the beginning and 134.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 18:13:35,311 INFO L158 Benchmark]: Boogie Preprocessor took 23.01ms. Allocated memory is still 199.2MB. Free memory was 134.6MB in the beginning and 132.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:13:35,311 INFO L158 Benchmark]: RCFGBuilder took 291.09ms. Allocated memory is still 199.2MB. Free memory was 132.6MB in the beginning and 119.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 18:13:35,311 INFO L158 Benchmark]: TraceAbstraction took 880364.84ms. Allocated memory was 199.2MB in the beginning and 310.4MB in the end (delta: 111.1MB). Free memory was 119.2MB in the beginning and 251.7MB in the end (delta: -132.5MB). Peak memory consumption was 139.8MB. Max. memory is 8.0GB. [2023-12-21 18:13:35,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 199.2MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 151.38ms. Allocated memory is still 199.2MB. Free memory was 147.4MB in the beginning and 136.2MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.45ms. Allocated memory is still 199.2MB. Free memory was 136.2MB in the beginning and 134.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.01ms. Allocated memory is still 199.2MB. Free memory was 134.6MB in the beginning and 132.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 291.09ms. Allocated memory is still 199.2MB. Free memory was 132.6MB in the beginning and 119.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 880364.84ms. Allocated memory was 199.2MB in the beginning and 310.4MB in the end (delta: 111.1MB). Free memory was 119.2MB in the beginning and 251.7MB in the end (delta: -132.5MB). Peak memory consumption was 139.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (362states) and FLOYD_HOARE automaton (currently 69 states, 129 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-61-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-60-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.3s, OverallIterations: 15, TraceHistogramMax: 94, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 629.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1400 SdHoareTripleChecker+Valid, 30.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1400 mSDsluCounter, 1005 SdHoareTripleChecker+Invalid, 26.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 881 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26400 IncrementalHoareTripleChecker+Invalid, 26456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 124 mSDtfsCounter, 26400 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2872 GetRequests, 2257 SyntacticMatches, 0 SemanticMatches, 614 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 778.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=14, InterpolantAutomatonStates: 364, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 18.3s SatisfiabilityAnalysisTime, 228.9s InterpolantComputationTime, 1383 NumberOfCodeBlocks, 1185 NumberOfCodeBlocksAsserted, 163 NumberOfCheckSat, 2703 ConstructedInterpolants, 0 QuantifiedInterpolants, 15612 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2796 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 30004/53274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown